Bunsen burner.



NIO. 882,611. PATENTBD MAR. 24, 1908.

G. BARTHEL'.

, BUNSEN BURNER.

lJuPL'ImTIoNFILED sBPT.15.19'os.

/ d/n yen fam/f andlaterally deflected without the body of the mixin ldeviatin quantities of vapor and air form mout n n My invent1on1slustrated 1n the accom` vaporizer surrounding the mixin Y, 3 conductslthe vaporized fuel in well known yUNITED STATES PATENT. oFFIcE.

,I GUSTAV BAMHEL, or DRESDEN, GERMANY.

BUNSEN BURNER.

' lTpo all whom it'may concern:

" Be it known that I,'GUsTAv BARTHEL, a s'ub'ect of the yGerman Emperor,and residing jat` residen7 Germany, have invented certain I 5' new anduseful' Improvements in Bunsen fiurners, of which the following is aspecifica- 'tion`.`

' The present invention relates to a Bunsen yburner'for uid fuels, forproducing an extremely'hot `ame,`resembling that of a blowpipe orbellows. In the new burner at the `periphery or Aata portion thereof, ofthe jet of vaplorizedfuel enteringl under hi h pres- 'sure t with air,particlesrof .the gas are caught up the jet being aected. This deviatingquantity of vapor and air is formed into a flame, which serves to keepthe main jet of vapor issuing from the mixing 'tube in a constant stateof ignition. To attain this object the mixing tube is slightlyconstrictedby means of an internal collar, ali a neck or the like; or acap is pushed over t e mixing tube, hav-V ing an exit which is smallerthan the mouth of the tube. In front of this constriction of tubeerforations are .the wall o the tu e, through whic are forced thegaseous particles which are prevented 30 from freely leaving the mixingtube.

Around the mixing tube I prefer to locate \also a, chamber havingerforated walls, into which .there enters vt e gaseous mixture' forcedthrough the wall of the mixing tube. After ignition of the burner theselaterally an aux' iary flame which unites with the main flame. To aid informing the auxiliary flame I prefer to' locate the vaporizerconcentrically with the mixin tube, in such manner that the auxiliaryarne rushes directly throu h the front wall of the vaporizer at the 1Iof the tube.

Ipanying ,drawlin'g, in which Figure 1 shows a Bunsen burner havin `aytu e.

Figs. 2-'4 show in section three ifferent' forms of4 constricted lmixingtubes, which- Inay be employed. Figs.. 5-7 show like 'vlews of mixingtubes provided with a cap. 1 isA the ,ipe eeding fuel fromzthe reservoirbelow'an coiled so as to resent a s iral 2, rthe convolutions of whiclie close y one against the other. From the coil 2 the pipe el mixingchamber and mingle therein f rovided in Specification of Letters'Patent'. l' PatentedMarch 24, 1908. Applcationled September 15, 1906.Serial No. 834,769.V

manner to the-nozzle or like device 4. O posite the latter is locatedthe mixing tu e 5, held in `place by two sockets 6, 7 which may lieinside, or be pushed over, the coil 2. The front socket 7 is perforatedasat 8 t o admit of the fla-me, burning in the interior of kthe tcoil.2, which constitutes the vaporizer,

passing out through it. 9 is al clam ring which serves .to separablyconnect t e assembled parts of the burner.4

The mixing-tube-consists ofthevcentral tube 5, perforated in anysuitable manner at` 10. The mouth of the tube 5 is lconstricted,` forinstance by means of an internal collar 1 1 (Figi 2), a lip'12 (Fig. 3)or a neck 13 (Fig. 4) or by means ofa cap 14 (Fig. 5) of any desiredform, the crownof. which is so sha ed at 17, and if desired, also in thecrown at 18,

so that when the burner is i nited an annular flame is formed at the heaof the cap also.

The perforations in the mixing tube being l i of greater capacity thanthe exit openings from the chamber surroundingsaidv tube, the

gaswill issue from said exits under a pressuregreater than if theerforations and exit openings were of equa capacity.

The burner operates as follows The fuel is fed to the vaporizer2 in wellknown manner. The vapor generated rushes out at the nozzle 4 and mto themixing tube 5, drawing in air at the' same time in the -manner of aninjector. The larger the ycross-section of the mixing tube and thesmaller the orifice in the nozzle 4, the larger the quantity (up to acertain limit) of air drawn into the tube 5 by` the gas jet. Owing, tothe constriction of the tube 5, and, to the apertures in its walls,particles of the gaseous mixture are, as already4 mentioned, caught upat the periphery of the gas jet and conducted either laterally into achamber, or directl into the vaporizer casing. These lateral y divertedgaseousparticles form, after ignition of the burner, an auxiliary flame,which serves in the first placefor heating the vap'orizer, and secondly,after it has left the apertures 8 in 1 the vaporizer casing, forcontinuous ignition,

that is tovsay, for maintenance of the vmain iiame, for which the gasjet iiows out of the mixing tube with undiminished velocity. Theauxiliary flame is aided inkeeping the main iiam'e continually ignited,by the annular flame burning at the perforations 18 at the front of thechamber.'

What I claim is :L 1. In a Bunsen burner, a mixing tube provided with''perforations and a `constricted exit opening, causing peri heralparticles of gas to deviate' through sai vperforations, and 'a vaporizersurroundlng said mixlng tube,

the space betweenthe tubel and'vaporizer forming a chamber to receivesaid d1vertedgases, said chamber at its exite'nd having openings for theissue of the diverted gas which, when ignited, forms an auxiliary flamefor heating the vapori'zer, substantially.

. as and for the purpose set forth.

2.'A Ina Bunsen burner, a mixingtube provided With perforations and aconstricted 'exit opening, causing peripheral particles of gas todeviate through said perforations, and

. a vaporizer consisting of a plpe coiled around mixing tube, saidchamber having openings at its exit end Wherev the ignited gases form an'auxiliar flame for heating the vaporizer, substantiallT 3. In a Bun'senburner a mixing tube provided with a' constricted gas out1et,'a vaorizerinclosing the same and two sockets c osing the space between thevaporizer and the mixing tube and'supporting the latter, sub- 'themixing tube and forming a chamber for receiving the gases thus -divertedfrom the y as and for the purpose set forth.

stantially as and for 'the purpose set forth.

4. Ina Bunsen burner, a mixing tube p ro- `videdv with p'erforations anda constricted gas outlet, a vaporizer inclosing the same, socketsclosing the space between the vaporizer and the mixing tube andsupporting the latter, the front of which sockets 1s provided with aring of perforations,gall substantially as and for the purpose set'forthIn testimony whereof I aiiix my signaturev in presence of two Witnesses.

l GUSTAV BARTHEL.

Witnesses:

CHEMNITZ H. SoinLLnvG, PAULl ARRAS. Y

